General databases contain content from a variety of subject areas and publication types. This will allow you to look at your research from a wide perspective.
Be sure to use the search refinements each database may offer including:
Unlike the general databases, subject-specific databases generally focus solely on journal articles as a publication type and do not have a broad, multidisciplinary approach.
Eighteenth Century Collections Online provides access to facsimile page images and full text of works published in the British Isles (plus some from North America) during the 18th century. The collection includes books, pamphlets, and broadsides. Users can search within texts keyword and download them as PDFs.